Molder&#39;s flask



R. S. BUCH. MOLQE'HS FLAsK. ARPLLCATIQN FILED'APR. 8, i919.

Patented Apr. 6, 1920.

5 SHEETS-SHEET l.

R. s. BUCH.

MOLDERS FLASK. APPLl-CATION FILED APRE. 1.919. l 1,335,818. Patented Apr. 6, 1920.

5 SHEETS-SHEET 3.

"'R. S. BUCH.

MOLDER'S ELASK.

APPucATloH FILED AFR. a, 1919.

, 1,335,818. Patented Apr. 6,1920.

5 SHEETS-SHEETv 4.

W 1 @j I UNF@ ST MOLDERS FLASK.

Application filed April 8, 1919. Serial 110.288,617.

To all whom t may concern:

Beit known that I, ROYER SBUCH, a citi! Which the following is a specification.

One object of my invention is to provide a molders flask Which Will have corrugated side and end sections, preferably of sheet metal, so as to give firmness and strength to the iiask and at the saine time make it oi ight Weight.

Another obj proved flask that the sand will Jfreely flow into engagement with the sides and ends during the jolting or ramrning of the sand Within the iiask.

fr still further object is to prevent the sand from shifting Within the flask, Which prior to my invention often occurred and caused injury to the mold and loss to the operator. 1

Another obje-ot is to so construct my iniproved flask that it Will hold the' sand in its proper position regardless of what action takes place in the rolli1ig-ovei"or ramming `and for this reason alone my y proved flask is a practical improvement in the art.

A still further object is to connect Y the corrugated side and end sections With'malv lea-ble or steel" corners which Vare corrugated to register with the corrugated side endend sections so as to make a postively` rigid structure Whichnill not springer cha its position at the corners While being hanH dled during the'niolding process.

A still further object is to so construct my improved flask that. the corners can he easily,v and quickly7 removed and replaced. f

Another object is toprovide the cope an( dragparts with pin connections, certain ci the pins being adjustable so as to permit contraction and expansion Without bending or jamming anyl of `the elements comprising the flask and at the same time to so arrange the pins that they will serve as centering 4members for keeping the parts 1n prei registration with each other.V A

These objects, and other advantageous ends which will he described hereinafter, I attaininthe followingmanner, reference being had to the accompanying drawings in 4which specification 'of Letters Patent.

ect is to so construct myy im` Patented Apr. 6, 1920.

Figure 1 is a top lplan vieW of my improved yflask, Y

Fig. 2 is a side elevation of the flask shown in Fig. 1, y e

Fig. -3 is anA outside elevationof the leit hand end of my improved flask, as shown in Fig. 1,.

Fig. L is an outside elevationof the right hand endof nay-improved flask, as shown in Fig. 1, Y 1

. Fig. 5 is a sectional end elevation taken on the line 5-5 of Fig. 2, f Fig. lisa longitudinal sectional elevation taken on the line 6-6 of Fig. 1, the same being drawn on an enlarged scale with a por; tion of its length broken away at its.,center, Fig. 7' is a Jfragmentary section through one of 'the corners a d taken on the line 7--7 of Fig. 1,

Fig. 8 is a fragmentary sectional plan view `taken on the line 8 8 of Fig. at, said section being taken neetion, f.

Fig. 9 is a fragmentary sectional plan view taken on theflineftf) of Fig. i through through the adjustable pin `con- `one of the hollow reinforcing' ribs of the es Arun canon.;

side section hav-ing a greater number of cor- Y v l rug-ations than 'the end and side sections shovvnfin' the foregoing figures and can he made of a greater height than said sections, Fig. 12 is a side elevationof Fig. 11 show-- ing a portion of the length thereof, Fig. 13 is an edge elevation ofan end or side section having a greater nurnherof corrugations 'thank the-endV and side' sections shown in the above mentioned figuresA and can he' made of afgreater height' than said sections,and` A v Fig. ligisan elevation of Fig. 18 showing portionof thelength thereof. V Referring-to Figs. 1 to 10 inclusive of the drawings,2()l represents my improved flask having a cope21 and adrag 22. The cope" i 21 rand drag'22 are each made in the form of a frame which is open at its top and hottom and each frameincludes tvvo oppositely disposedside sections 23 and 24-,and-two 'op-y positely;disposedV endy sections25 and 26.

These end-'and side sections, as illustrated', l.

Y of the en d sections and side sect are made of corrugated sheet metal, the cor rugations 27 thereof runningin the direc tion of the length of said end and side scc-- tions. Thus the inner surfaces of cach of the end and side sections include inwardly projecting ribs 28 and grooves 29. rihe ribs and grooves 29 smoothly blend withA each other and are curved lin cross section so as to produce a series of compound or ogee curves. The top and bottom edge portions of each of the side and end sections, both in the cope and drag, are preferably bent at an angle inwardly toproduce flanges 30 which extend entirely around the sides and ends of the cope and drag. By pressing'or rollingthe corrugations 27 into the respective sections, the outer surface of all of said sections will likewise be formed with a series of outwardly projecting ribs 31 and grooves 32. The end and side sections, both in the cope and drag, are respectivelyvsecured togetherby 'corner sections 33. These corner sections havetheir inner surfaces corru .1; so as to provide inwardly projecting ibs 34 and grooves 35 which respectively it the grooves 32 and ribs 31 in the outer surface of the end and side sections above described. ln other words, the corrugations of the coi'- ner sections 33 intermesh with the corrugivtions of the end and side sections.

in order to provide additional reinforcenient for the corners of the il ask, l provide angular plates 36 which are corrugated so as to interniesh with Ythe grooves 29 and rib 28 of the corrugations 27. rlhe end and side sections adjacent the corners are clamped between the corner sections 33 and the plates 36, as clearly shown in Fig. 8, by bolts 40 and in order to make a strong and neat connection and abutment for the endr edges ne, crab-ly make the corner sections of such thickness, as shownV at 37, as to extend in contact with the plates 36 at their points of bend. T his construction also provides shoulders 33 against which the end and side sections abut. The corner'sections 33 include hollow outwardly projecting ribs 39 Vwhich are clearly sho-wn in cross section in Fig. 7.

As shown in Figs. 1, 5 and 10, the cope 21 has sand supporting bars 41 extending transversely thereof, said sand supporting bars having their opposite end portions 42 and 43 shaped to interniesh with the ribs 28 and grooves 29 of the side sections 23 and 24, as shown in Figs. 5 and 10. Thus the 28 and grooves 29 form slideways for the sand supporting bars 41 so that the sand Vsupporting can be easily slid into various positions within thel'ength of the flask and. at the saine time are prevented from falling out of the flask. f

The curvature of the ribs 28 and grooves 2,9 of the corrugations 27 is such as to permit the sand to freely flow and engage all Leaders portions of the inner surfaces of the end sections and side sections, both in the cope and drag so that when ramming or jolting, the sand will engage the inner surfaces with substantially the same pressure at all points.

This prevents the sand from sagging, shifting or moving away from the side surfaces and at the saine time provides a secure holding means for the body of sand within the flask. v

rllhe drag 22 at opposite endshas brackets 44 secured thereto by bolts 45. The brackets 44 have pins'46 and 47 which are threaded yat their lower ends and secured by nuts 48. Y

The pins 46 and 47 extend upwardly beyond. the parting between the drag and the cope as clearly shown in Figs. 2, 3, 4 and 6.- The pin 46 extends through a hole 49 in a bracket 50, said bracket being secured to the end section 25 of the cope 21. The pin'46 and bracket 50 form centering means to hold the cope and drag in register. rlhe pin 47, as illustrated, is, preferably made square in cross section and slidably lits within a'cliannel 51. T he channel 51 has a head which is secured to a bracket 53 by bolts54. The Y length of the cope and drag. At the same time the cope can be freely lifted fromthe drag or replaced thereon.

I preferably provide corrugated coupling plates 57 so as to bridge the parting 53 be tween the cope and the drag; the corrugations of said coupling plates 57 intermeshing with the ribs 31 and grooves 32 onthe side sections 23 and 24 of the flask. The side sections 23 and 24 have holes 59 (see Fig. 10) through which tongues 60 project, said tongues having flared headsv 61 for engagement with the inner surfaces of said'side sections. Thetongues 60 project through holes 62 in the coupling plates 57 and are slotted at 63 to permitsplit wedge pins 64 to be passed therethrough, so as to'blnd the coupling plates 57 to the respective side sections of the cope and drag. Thus the coupling plates 57 act to clamp the side sections of the cope and drag together butl can be easily removed, when it is desired to separate the cope from the drag, byknocking the split wedge pine 64 out of the slots 63.

By using the construction above described itis an easy matterto vary the depth of the flask by using side and end sections of various heights, such for example as shown in n Figs. .il to i4 inclusive, said gures being drawn on the scale, for example as shown in Figs. l, 2, 3, t, 5, 7, 8, 9 and 10 and are therefore of greater heights than the end and side sections of said 'latter mentioned figures; the increase in the height being proj five inches in height. It is possible to quickly build up flasks of various depths by using end and side sections of various heights. This is `an advantageous feature in the construction of flasks, since it is possible to quickly make up flasks of various depths in which the cope and drag can be made of the same or different heights; it merely being necessary for the foundryman to keep in stock corrugated sections of various heights.

While I have described my invention as taking a particularform, it will be understood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, whatY I claim as new and desire to secure by Letters Patent is: I

l. A flask having corrugated sides; and sand supporting members having ends tting said corrugations, whereby said members are slidably supported on said sides; substantially as described.

2. A flask having corrugated end and side sections; and detachable corners for securing said sections together, said corners having portions extending between the ends of the sections and forming shoulders for abutment with the ends of said sections; substantially as described.

3. A flask having corrugated end and side sections; and detachable corners'for securing said sections together, said rcorners having corrugations intermeshing with the corrugations of said sections and providing.' shoulders for abutment with the ends of said sections, whereby the portions of said tinuation of the inner surfaces of saidA side and end sections; substantially as described.

4. A flask including twoparts one above the other; a pin secured to one of said parts for forming a coupling with the other of said'parts and having a connection with said latter part slidable in the direction of the length of the flask to permit variation -corners'between the shoulders form a conor difference in the length of said two parts due to natural causes; substantially as described. v f

5. A flask including two parts; a pin secured to one of said parts; and a bracket secured to the other of said parts and having y j a channel therein into which said pin projects, whereby said channel and pin can move relatively to each other inthe direction of the length of said flask; substantially v as described. y f

6. A flask including two parts; a pin secured to' one of said'parts; and a bracket secured to the other of said parts and having a channel'therein into whichr said pin tion of the length of said flask, saidA channel being detachably connected to said bracket; substantially asl described.

7. A flask made in two parts and having a coupling plate extending across the parting' projects, whereby said channel and pin can f move relatively to each other kin the direcname to this specifcationin the presence of two subscribing witnesses.

ROYER S. BUCH. Witnesses:

D. C. CoBLn, n. M. E. WEAVER. 

